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Finding the Fourth Proportional to 49,999.20, 74,986.80 and 28,893.60

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Solution

The fourth proportional to 49,999.20, 74,986.80 and 28,893.60 is: 43,333.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,999.20 : 74,986.80 = 28,893.60 : x
  2. Step 2: Convert to fraction form
    49,999.20/74,986.80 = 28,893.60/x
  3. Step 3: Cross multiply
    49,999.20x = 74,986.80 × 28,893.60
  4. Step 4: Simplify right side
    49,999.20x = 2,166,638,604.48
  5. Step 5: Solve for x
    x = 2,166,638,604.48/49,999.20
  6. Step 6: Final answer
    x = 43,333.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.